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Piston rod surface microtexture laser direct-writing and photoetching technology

A technology of laser direct writing and piston rod, which is applied in the field of piston rod surface strengthening, can solve the problems of poor wear resistance, complicated process steps, and short service life of piston rods, and achieve improved wear resistance, simple working steps, and increased service life Effect

Inactive Publication Date: 2016-09-07
XUZHOU YONGJIA HYDRAULIC EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the piston rod is a part that moves frequently, ordinary piston rods have poor wear resistance and short service life
[0003] The invention patent with the patent number of 2010105829785 discloses a composite process of piston rod surface strengthening layer. Although the service life of the piston rod is improved, the process steps are complicated and the cost is high
[0004] The utility model patent No. 201020652887X discloses a surface-strengthened piston rod. Although the wear resistance and corrosion resistance of the piston rod are improved, the process steps are complicated and the cost is high.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] (1) Pour industrial alcohol and acetone on the working surface of the piston rod to remove oil stains and impurities;

[0021] (2) Brush a layer of photoresist on the specific position of the piston rod, the thickness of the photoresist is 0.02mm, and the specific position of the piston rod refers to the surface participating in the friction;

[0022] (3) Put the piston rod treated in step (2) into a muffle furnace for drying at a heating temperature of 80° C. for 30 minutes;

[0023] (4) Process the piston plug part coated with photoresist after step (3) with laser direct writing technology to form a regular micro-texture on its surface, with a micro-texture period of 0.1 mm and a groove width of period half;

[0024] (5) Brush the corrosion solution on the piston rod part coated with photoresist after the step (4) has been processed, the corrosion solution adopts alcohol with a weight ratio of 96:4: nitric acid, the time is 5 minutes, and the obtained texture depth i...

Embodiment 2

[0028] (1) Pour industrial alcohol and acetone on the working surface of the piston rod to remove oil stains and impurities;

[0029] (2) Brush a layer of photoresist on the specific position of the piston rod, the thickness of the photoresist is 0.3mm, and the specific position of the piston rod refers to the surface participating in the friction;

[0030] (3) Put the piston rod treated in step (2) into a muffle furnace for drying at a heating temperature of 85° C. for 50 minutes;

[0031] (4) Process the piston plug part coated with photoresist after step (3) with laser direct writing technology to form a regular micro-texture on its surface, the micro-texture period is 0.3 mm, and the groove width is periodic half;

[0032] (5) Brush the corrosion solution on the piston rod part coated with photoresist after step (4); the corrosion solution uses alcohol with a weight ratio of 96:4: nitric acid, and the time is 15 minutes, and the obtained texture depth is 12 μm;

[0033] ...

Embodiment 3

[0035] (1) Pour industrial alcohol and acetone on the working surface of the piston rod to remove oil stains and impurities;

[0036] (2) Brush a layer of photoresist at the specific position of the piston rod, the thickness of the photoresist is 0.5mm, and the specific position of the piston rod refers to the surface participating in the friction;

[0037] (3) Put the piston rod treated in step (2) into a muffle furnace for drying at a heating temperature of 90° C. for 50 minutes;

[0038] (4) Process the piston plug part coated with photoresist after step (3) with laser direct writing technology to form a regular micro-texture on its surface, the micro-texture period is 0.3 mm, and the groove width is periodic half;

[0039] (5) Brush the corrosion solution on the piston rod part coated with photoresist after the step (4) has been processed, the corrosion solution adopts alcohol with a weight ratio of 96:4: nitric acid, the time is 30min, and the obtained texture depth is 2...

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Abstract

The invention discloses a piston rod surface microtexture laser direct-writing and photoetching technology and relates to the technical field of piston rod surface strengthening. The technology comprises the following steps: (1) routinely cleaning oil stain and impurities on the surface of a piston rod; (2) coating a specific position on the piston rod with a layer of photoresist, wherein the thickness of the photoresist is 0.02-0.5 mm; (3) performing high-temperature drying treatment on the piston rod treated in Step (2); (4) treating a piston rod part treated in Step (3) and coated with the photoresist by a laser direct-writing technology to form a regular microtexture on the surface of the piston rod part; (5) coating the piston rod part, treated in Step (4) and coated with the photoresist, with corrosive liquid; and (6) performing cleaning and airing treatments on the piston rod treated in Step (5). The technology provided by the invention has the advantages that the wear resistance of the piston rod is improved, the service life of the piston rod is prolonged, the processing method is simple, and the processing cost is low.

Description

technical field [0001] The invention relates to the technical field of piston rod surface strengthening, in particular to a laser direct writing photolithography micro-texture process on the surface of a piston rod. Background technique [0002] Most of the piston rod is used in the cylinder and cylinder movement actuators, which is a moving part with frequent movements and high technical requirements. Taking the hydraulic cylinder as an example, it consists of several parts: cylinder barrel, piston rod, piston, and end cover. The quality of its processing directly affects the life and reliability of the entire product. The processing requirements of the piston rod are high, and the surface roughness requirement is Ra0.4~0.8um, and the requirements for coaxiality and wear resistance are strict. Since the piston rod is a frequently moving part, the ordinary piston rod has poor wear resistance and short service life. [0003] The invention patent with the patent number of 2...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D10/00
CPCC21D10/005
Inventor 王世永闫梅
Owner XUZHOU YONGJIA HYDRAULIC EQUIP